std::atan2

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Defined in header <cmath>

float       atan2( float y, float x );

double      atan2( double y, double x );

long double atan2( long double y, long double x );

Computes the inverse tangent of y/x using the signs of arguments to correctly determine quadrant.

[edit] Parameters

x, y - floating point value

[edit] Return value

arc tangent of y/x in radians in the range of [-π; π] radians.

[edit] See also

atan
computes arc tangent (arctan(x))
(function)
asin
computes arc sine (arcsin(x))
(function)
acos
computes arc cosine (arccos(x))
(function)
tan
computes tangent (tan(x))
(function)
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